Direction finder



B. F. ANTHONY DIRECTION FINDER March 7, 1950 Filed March 19, 1946 og/away /mgw Patented Mar. 7, 1950 UNITED STATES PATENT OFFICE DIRECTIONFINDER Benjamin F. Anthony, Kirkwood, M0.

1946, Serial No. 655,497 e claims. (c1. 23o-249.5) Y

Application March 19,

This invention relates to new and useful improvements and structuralrefinements in direction nnders, and the principal object of theinvention is to provide a device of the character herein described,which is adapted for use with Ventilating fans and the like, for thepurpose of determining the direction of air current produced by thesame.

Generally speaking, the invention consistsk of a source of lightpositioned substantially at the center of the fan, the light raysemanating from said source and the air current produced by the fan beingcoordinated toward a common focus, whereby the direction of the aircurrent may be readily and conveniently determined as aforesaid.

A further object of the invention is to provide a direction finder whichdoes not, in any Way, interfere with the normal operation of such fanand in which the light source may be turned off if desired, as soon asthe direction of the air current has been determined.

Another obi ect of the invention is to provide a direction finderwhereby the fan may be adjusted before being set in motion, thuseliminating the conventionally experienced havard of sustaining iniuryto ones fingers, while attempting to ad iust the fan in motion.

An additional obiect of the invention is to provide a direction finderwhich is applicable to v both. new fans and those already in use.

A still further ohiect of the invention is t provide a direction finderwhich is of simple construction and which. in addition to its use withVentilating fans as above set forth. may be generallv employed inassociation with blowers of all descriptions. hair driers, and the like.

With the above more important obiects in View, and such other obiects asmay become apparent as this specification proceeds, the inventionconsists essentially of the arrangement and construction of parts asillustrated in the accompanying drawings, in which:

Figure 1 is a side elevation of a Ventilating fan. showing the inventionthereon.

Figure 2 is a front View of the same.

Figure 3 is a cross-sectional view, taken in the plane of the line 3-3of Figure 2 and illustrating the invention per se.

Figure 4 is a side elevation showing the invention as used on a blower,and

Figure 5 is a front elevation of the subject illustrated in Figure 4.

Like characters of reference are used to designate like parts in thespecication and throughout the several views.

Referring now to the accompanying drawings in detail, the inventionconsists of a light source designated generally by the referencecharacter I0, the same comprising a lamp shell II, conliguratedsubstantially as shown.

A socket I2 is mounted upon the back wall I3 of the shell II by suitablebolts I4 and an incandescent lamp I5 is replaceably positioned in thesocket. A suitable reflector IS is mounted behind the lamp I5 and a lensIl is positioned in the remaining end of the shell II, as will beclearly apparent from the accompanying drawings.

The shell II is also provided with a suitable switch I8, the latterbeing in circuit with the lamp I5 by means of the conductor I9. Afurther conductor 20 connects the entire lamp assembly to a suitablesource of current.

The shell II may bewelded or otherwise similarly secured to the radiallyextending bars 2l of the guard 22, such as is usually associated withthe Ventilating fan 23. Alternatively, the shell may be provided with asuitable mounting flange (not shown), this in turn being adapted forconnection to the fan guard.

It will be noted that the lamp assembly I0 is positioned substantiallyat the center of the fan and when the invention is placed in use, thelight rays 24 emanating from the lamp are directed to coincide with thedirection of air current 25 produced by the fan. In other words, thelight rays and the air current are directed in a same general direction,whereby the direction of the air current may be readily and convenientlydetermined.

It is believed that the advantages resulting from the use of theinvention will be readily understood from the foregoing disclosure, andfurther description thereof at this point is therefore consideredunnecessary.

Referring now to the accompanying Figures 4 and 5, the same illustratethe invention as applied to a blower, designated generally by thereference character 26. Herein, the construction of the lamp assembly Ibis similar to that already described and it should be noted in thisconnection that the invention may be used with ventilating, airmblowingand similar other appliances in general, as well as in hair driers andother like machines, A wherever it is required to determine thedirection of air current.

' While inthe foregoing there has been shown and described the preferredembodiment of Vthis invention it is to be understood that minor changesin the details of construction, combination and arrangement of parts maybe resorted to without departing from the spirit and scope of theinvention as claimed.

What I claim as my invention is:

1. In association with a fan having a guard attached thereto, a sourceof light comprising an elongated lamp shell having a, forward and rearend and a. socket therein, for supporting an incandescent lamp, areector behind said lamp, a

lens in front of said lamp attached to said Shelly a switch in saidshell and in circuit with said lamp, means associated with said shelland; posi.-1 tioned between said switch and the rear end of said shellfor attaching said shellto the fan guard.

2. An air now direction nder compris-ing a fan having a guard associatedtherewith, a source of light comprising a lamp shell attached to thecenter of said guard andr extending partially` on each face of saidguard, a socket in said shell, for supporting an incandescent lamp, areiector be- 4 hind said lamp. a lens in front of said lamp, and aswitch in said shell and in circuit with said lamp, the light raysemanating from said lamp and the air ow produced by said fan being c0-ordinated toward a common direction for the purpose of determining thedirection of the 'low of air.

BENJAMIN F. ANTHONY.

REFERENCE S CITED' The following references are of record in the filleof this patent:

UNITED STATES PATENTS Number Name Dlate Re. 17,236 Martin Mar, 12, 1929905,089 McBerty Nov. 24, 1908 1,185,267 Vuilleumier May 30, 19161,402,352 Hawthorne, Jan. 3, 1922 1,464,382 Eaton Aug. 7, 19231,504,003' Trumbull Aug. 5, 1924 1,722,825 Roethel July 36'-, 19292,245,015 Siloal June 1G,V 1941

